COLLBRAN, COLORADO

Monthly Total Growing Degree Days

(051741)

Base Temperature = 40 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 199912
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
Months with 5 missing days or less use mean for missing day(s)
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1893 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1894 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1895 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1896 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1897 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1898 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1899 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1900 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 73.00 v 43.50 0.00 43.50
1901 0.00 11.00 29.00 230.00 575.50 687.50 1066.50 910.50 614.50 341.00 35.17 a 6.95 b 4507.62
1902 0.00 6.00 12.50 279.50 530.50 804.00 850.50 912.50 608.00 285.50 49.00 0.00 4338.00
1903 0.00 0.00 39.50 197.00 401.50 677.50 872.50 905.00 503.50 257.00 56.50 0.00 3910.00
1904 0.00 42.50 92.00 271.50 446.50 640.00 849.00 846.50 601.00 248.50 9.50 0.00 4047.00
1905 0.00 0.00 67.00 208.00 377.00 738.00 890.00 896.00 598.00 157.00 27.00 0.00 3958.00
1906 0.00 2.50 56.00 207.00 442.00 633.50 830.50 823.50 566.50 253.00 57.50 5.50 3877.50
1907 0.00 24.00 121.00 266.00 320.33 a 567.50 889.70 a 829.00 563.57 b 379.75 e 10.50 j 0.00 a 3960.85
1908 0.00 3.50 52.50 g 185.00 g 304.46 c 547.00 860.00 787.50 580.34 a 208.00 18.00 0.00 3308.81
1909 5.00 0.00 18.00 135.00 330.00 695.50 900.00 861.50 540.00 348.50 83.50 0.00 3917.00
1910 2.00 0.00 184.50 273.00 454.50 751.50 925.00 842.50 649.00 285.72 a 101.50 0.00 4469.22
1911 13.50 1.00 73.50 193.50 469.50 679.50 801.00 811.88 b 624.00 186.50 6.00 0.00 3859.88
1912 0.00 0.00 11.50 86.00 367.00 619.00 802.50 790.50 378.50 201.00 32.00 0.00 3288.00
1913 0.00 1.50 24.50 240.50 502.00 660.50 829.50 882.50 504.50 207.24 d 61.50 0.00 3914.24
1914 1.50 2.50 31.00 209.50 311.50 i 657.50 875.23 a 838.00 656.50 280.00 75.52 a 0.00 3627.25
1915 0.00 1.50 48.50 318.00 376.00 593.00 873.00 841.50 573.62 a 326.50 85.00 0.00 4036.62
1916 0.00 0.00 124.00 235.00 367.50 657.00 908.00 772.50 558.50 233.00 53.50 4.50 3913.50
1917 0.00 6.00 24.00 122.50 258.50 652.50 952.73 a 805.50 600.00 299.50 117.00 8.00 h 3838.23
1918 5.50 1.56 a 104.33 e 124.50 437.50 584.50 h 848.50 820.00 576.60 e 343.07 a 38.50 0.00 3300.05
1919 0.00 0.50 54.50 254.00 540.50 772.24 a 934.13 a 888.50 670.00 181.00 27.00 0.00 4322.37
1920 0.00 4.50 10.50 k 103.00 488.77 a 666.50 898.48 a 835.50 592.24 a 0.00 z 0.00 z 0.00 z 3588.99
1921 0.00 z 0.00 z 0.00 z 165.50 448.50 619.50 835.00 776.00 555.00 257.50 f 79.82 b 13.50 g 3479.32
1922 1.03 a 9.13 e 37.50 138.50 402.50 695.89 b 868.50 869.50 599.00 226.50 7.50 0.00 3855.56
1923 0.00 0.00 10.00 163.00 432.00 619.50 927.00 760.02 a 489.00 141.00 5.36 b 0.00 3546.87
1924 0.00 1.00 12.00 153.50 393.04 c 657.22 c 838.03 a 553.00 i 515.00 c 230.71 e 40.56 c 0.00 b 2841.06
1925 0.00 0.00 59.86 b 236.38 a 571.71 e 684.60 e 961.60 e 747.21 b 572.14 b 201.50 c 1.80 e 0.00 a 4036.80
1926 0.00 a 0.00 b 47.05 c 270.00 a 445.50 723.89 c 0.00 z 0.00 z 0.00 z 268.48 c 18.62 a 0.50 1774.05
1927 0.00 0.50 28.50 207.93 a 388.53 a 690.58 d 859.39 d 753.09 b 525.00 d 225.27 a 50.89 b 0.00 3729.68
1928 5.17 a 1.55 a 51.50 150.50 482.57 a 560.89 b 850.36 b 781.09 c 539.00 240.50 17.50 0.00 3680.63
1929 0.00 0.00 11.50 126.50 372.00 639.83 a 894.19 b 859.22 a 0.00 z 233.02 a 0.00 a 1.00 3137.25
1930 0.00 a 1.00 20.31 b 297.60 e 332.65 e 645.58 d 882.98 a 818.83 b 503.04 b 171.53 a 9.00 0.00 3682.52
1931 0.00 0.00 25.00 207.41 a 377.88 b 788.79 a 951.50 875.50 635.50 231.00 f 27.00 0.00 3888.59
1932 0.00 6.00 23.25 c 177.93 a 443.00 628.80 e 889.70 a 807.03 a 496.50 204.00 7.50 d 0.00 3683.71
1933 0.00 0.00 38.75 a 113.79 a 320.00 829.14 a 981.31 b 837.00 671.38 a 327.50 4.04 d 3.58 e 4126.49
1934 1.03 a 1.62 b 128.28 b 320.17 a 612.77 a 677.07 a 1017.50 940.69 b 532.76 a 302.00 41.00 0.00 a 4574.88
1935 0.50 0.00 18.60 a 185.50 386.00 544.50 f 940.16 b 849.40 a 565.00 254.41 b 13.50 0.00 a 3213.07
1936 0.00 0.00 27.12 c 250.50 514.48 e 778.45 a 929.50 869.00 529.00 211.50 0.00 0.00 4109.55
1937 0.00 d 0.00 19.12 a 159.00 509.29 c 651.50 906.23 a 850.50 597.00 256.50 31.50 2.00 3982.64
1938 0.00 3.00 31.53 b 250.00 405.14 b 711.00 813.00 822.02 a 557.07 a 277.50 10.50 0.00 3880.76
1939 0.00 a 0.00 43.92 a 259.29 b 512.03 b 648.21 b 913.47 a 835.00 608.00 179.50 17.00 2.00 4018.42
1940 0.00 a 8.00 72.33 d 201.21 a 533.00 759.00 942.83 b 843.72 a 604.14 a 234.05 a 13.50 0.00 4211.77
1941 0.00 1.00 46.50 a 141.00 502.41 b 602.68 b 834.50 800.00 350.00 f 206.00 23.00 2.50 3159.59
1942 0.00 0.00 0.52 a 221.38 a 394.98 b 659.50 867.00 779.13 a 487.50 b 222.34 b 59.46 b 0.52 a 3692.34
1943 3.10 a 6.22 a 58.26 b 352.50 406.00 632.00 876.50 799.50 531.21 a 260.00 8.00 0.00 3933.29
1944 0.00 0.00 14.00 96.50 448.50 587.50 796.50 759.00 516.50 267.50 57.00 0.00 3543.00
1945 0.00 3.50 13.50 124.50 474.50 535.50 849.50 801.50 463.50 271.00 21.50 0.00 3558.50
1946 0.00 0.00 47.50 303.00 360.50 679.50 873.00 808.00 508.50 149.00 0.00 f 4.50 3733.50
1947 0.00 0.00 39.00 151.50 486.50 545.00 855.00 788.50 606.00 307.50 10.00 0.00 3789.00
1948 0.00 0.00 2.00 211.00 508.00 629.00 823.00 740.50 578.00 203.00 2.00 2.00 3698.50
1949 0.00 0.00 n 19.50 k 228.00 422.50 615.00 833.00 829.00 585.50 217.50 33.00 0.00 3763.50
1950 1.00 6.50 32.00 244.50 390.00 717.00 877.00 804.00 560.50 426.00 56.00 1.00 4115.50
1951 0.00 9.50 41.50 204.50 495.50 633.50 977.50 496.50 l 545.00 224.50 5.00 0.00 3136.50
1952 0.00 0.00 6.00 239.50 499.50 796.00 708.50 h 823.29 e 604.50 297.50 28.00 0.00 3294.29
1953 0.00 3.00 110.00 204.50 366.50 792.00 1001.50 848.50 713.00 363.50 93.00 0.00 4495.50
1954 2.00 29.00 48.00 352.00 563.00 729.50 1015.00 903.50 648.50 380.50 92.00 0.00 4763.00
1955 0.00 0.00 34.00 208.00 475.00 661.00 977.57 b 933.00 705.50 384.50 16.73 d 34.50 4429.80
1956 14.00 4.00 97.50 230.00 571.50 830.50 939.50 831.00 738.00 392.67 a 31.00 4.00 4683.67
1957 0.00 14.00 67.00 177.00 338.00 683.00 905.50 854.50 561.50 325.00 15.00 0.60 e 3941.10
1958 0.00 35.50 20.00 141.50 606.50 806.00 913.00 996.00 633.50 362.50 81.00 9.00 4604.50
1959 0.00 2.50 33.00 239.50 489.50 819.00 942.50 893.50 565.50 273.50 34.00 0.00 4292.50
1960 0.00 0.00 110.50 275.00 470.00 765.50 972.00 926.50 722.50 334.00 76.50 0.00 4652.50
1961 0.00 20.00 61.50 182.14 b 519.50 819.00 945.00 931.50 442.00 281.50 9.00 9.00 j 4211.14
1962 0.00 30.00 26.00 352.00 477.50 745.00 c 942.50 941.50 686.50 448.50 109.00 0.50 4759.00
1963 0.00 20.50 90.00 238.00 635.50 739.50 1045.22 a 902.50 757.50 541.00 105.00 0.00 5074.72
1964 0.00 0.00 b 14.00 183.50 495.00 691.00 1063.50 871.21 b 656.50 451.50 52.00 0.00 4478.21
1965 4.00 2.00 23.50 206.00 437.50 654.00 903.50 842.00 506.50 422.00 130.00 4.00 4135.00
1966 0.00 0.00 110.00 234.50 552.50 733.00 1050.00 892.50 618.00 232.50 54.50 13.00 4490.50
1967 0.00 z 0.00 z 0.00 z 92.50 l 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1968 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1969 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1970 0.00 z 3.00 4.50 63.50 467.50 650.00 885.50 860.50 463.50 157.50 28.00 0.00 3583.50
1971 0.00 0.00 73.00 190.00 377.00 684.50 854.50 832.00 416.00 197.22 b 0.50 3.10 a 3627.82
1972 0.00 12.95 a 96.62 a 157.00 f 325.50 g 696.11 c 808.00 771.12 c 540.00 a 290.88 a 0.00 d 0.00 h 3215.68
1973 0.00 2.50 2.50 46.00 g 203.50 p 576.50 770.00 783.86 c 456.67 c 257.09 b 50.00 4.50 2903.61
1974 0.00 0.00 44.00 m 0.00 z 376.00 f 675.50 828.00 677.00 465.50 234.00 0.50 0.00 b 2880.50
1975 0.00 0.00 0.50 87.41 a 323.00 582.00 842.50 685.00 473.00 248.50 5.50 0.00 3247.41
1976 0.00 0.00 12.50 347.50 520.00 657.00 953.50 809.00 530.00 0.00 z 0.00 0.00 z 3829.50
1977 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1978 0.00 z 0.00 z 0.00 z 272.50 465.50 771.50 996.50 888.00 614.00 362.50 73.00 0.00 4443.50
1979 0.00 0.00 26.00 238.50 0.00 z 730.50 953.50 852.00 731.00 378.00 19.14 a 0.00 3928.64
1980 0.00 3.50 9.00 214.50 408.50 810.00 997.00 871.00 641.00 331.24 d 81.00 15.00 4381.74
1981 0.00 b 13.48 a 27.38 a 317.50 417.98 a 768.50 951.00 894.00 658.00 202.53 a 51.21 a 0.00 4301.59
1982 0.00 5.50 44.00 142.00 404.50 663.50 895.50 922.00 577.50 143.00 24.00 0.00 3821.50
1983 0.00 1.50 41.50 119.00 291.00 581.50 849.00 895.00 658.00 247.00 60.50 0.00 3744.00
1984 0.00 0.00 11.00 93.50 479.00 587.50 910.00 892.50 628.00 176.50 27.50 0.00 3805.50
1985 0.00 0.00 i 44.00 217.00 485.00 735.50 914.50 888.00 455.50 202.50 26.50 0.00 3968.50
1986 0.00 36.00 131.00 204.50 392.50 760.50 838.50 859.00 459.50 198.00 8.50 0.00 3888.00
1987 0.00 0.00 22.00 252.50 440.50 731.50 858.00 771.00 549.50 283.50 39.50 0.00 3948.00
1988 0.00 0.00 24.50 151.50 402.50 728.00 879.50 776.00 391.50 343.50 60.50 0.00 3757.50
1989 0.00 6.00 123.00 287.00 447.00 639.50 933.00 762.50 539.50 229.00 13.50 0.00 3980.00
1990 0.00 1.50 71.00 198.00 368.50 811.50 934.50 848.00 676.50 218.00 44.00 0.00 4171.50
1991 0.00 0.00 36.50 142.50 414.00 684.50 902.00 891.50 610.50 378.50 13.00 0.00 4073.00
1992 0.00 1.50 85.50 362.50 555.00 675.50 832.50 804.00 601.00 384.50 0.50 1.00 4303.50
1993 0.00 3.00 93.00 136.50 483.00 679.00 881.50 834.00 578.50 249.00 3.00 0.00 3940.50
1994 0.00 5.00 105.50 229.50 559.50 879.50 1022.50 985.50 665.50 253.00 42.50 2.00 4750.00
1995 0.00 26.50 103.00 126.50 l 303.50 600.00 871.50 963.50 653.00 233.50 62.50 15.50 3832.50
1996 0.00 9.00 80.50 202.00 551.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 843.00
1997 0.00 z 0.00 z 0.00 z 145.00 494.50 750.00 879.00 850.00 634.50 275.50 25.50 0.00 4054.00
1998 0.00 1.00 84.00 115.00 474.50 578.00 952.50 920.50 441.50 l 306.00 57.00 2.50 3491.00
1999 0.00 11.00 144.50 168.50 389.05 a 701.00 916.00 850.50 531.67 c 327.00 102.93 a 2.00 4144.15
Period of Record Statistics
MEAN 0.65 5.23 50.72 206.97 446.37 686.93 902.69 843.22 575.48 272.89 38.00 1.66 4069.15
S.D. 2.26 9.05 39.50 68.50 79.33 75.71 64.25 60.31 78.46 78.31 31.83 4.64 376.64
SKEW 4.65 2.38 0.98 0.23 0.02 0.23 0.52 -0.04 -0.08 0.76 0.83 4.86 0.35
MAX 14.00 42.50 184.50 362.50 635.50 879.50 1066.50 996.00 757.50 541.00 130.00 34.50 5074.72
MIN 0.00 0.00 0.50 63.50 258.50 535.50 770.00 677.00 378.50 141.00 0.00 0.00 3247.41
NO YRS 91 90 88 90 90 92 92 91 90 90 92 89 65